Help me

I'm a mechanics student who studying assembly language. I have a problemeven though, i have program, I don't know how to draw for flow chart for this program I read instructions i don't got the concept. That weird because i got first program. If i have flow chart concept i may be write new program or can modify old one. Please draw for me. I know the that is tread question but i am in hurry for flowchart.......please help methank in advance